The StartingCamera per player is currently overwritten by the GameView focusing on the first entity, preferably the civic center.
If the StartingCamera feature should be used, these maps should still focus the civic center or a player entity by default.
This doesn't remove the <Camera> element which is likely used for observers. Observermode should also use the map center unless there is a really good reason.
rmgen/ is also a special case not addressed here.